X1000: USB2 (EHCI) connector on the Nemo board

[xeno74]

Hi All,

Where is the connector for USB2 (EHCI) on the Nemo board?

lsusb -t -v

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/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
    ID 1d6b:0001 Linux Foundation 1.1 root hub
    |__ Port 2: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 12M
        ID 03ee:6901 Mitsumi SmartDisk FDD
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
    ID 1d6b:0001 Linux Foundation 1.1 root hub
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
    ID 1d6b:0001 Linux Foundation 1.1 root hub
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
    ID 1d6b:0001 Linux Foundation 1.1 root hub
    |__ Port 2: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        ID 046a:000c Cherry GmbH 
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/10p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
    ID 1d6b:0001 Linux Foundation 1.1 root hub
    |__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
    |__ Port 1: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
        ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard

I mean the connector for:

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Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/10p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub

dmesg | grep -i ehci

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[    1.907060] ehci-pci 0000:05:13.5: EHCI Host Controller
[    1.907526] ehci-pci 0000:05:13.5: new USB bus registered, assigned bus number 2
[    1.908009] ehci-pci 0000:05:13.5: applying AMD SB600/SB700 USB freeze workaround
[    1.908523] ehci-pci 0000:05:13.5: debug port 1
[    1.926730] ehci-pci 0000:05:13.5: irq 12, io mem 0xa0209800
[    1.949229] ehci-pci 0000:05:13.5: USB 2.0 started, EHCI 1.00
[    2.005321] usb usb2: Product: EHCI Host Controller
[    2.024460] usb usb2: Manufacturer: Linux 6.14.0-rc2-powerpc64-smp ehci_hcd

Does anyone use the SB600 USB2 port?

Thanks,
Christian

[Hypex]

Hi All,

Where is the connector for USB2 (EHCI) on the Nemo board?

That should be all the connectors at the back. And the front headers should be the same. According to the X1000 TRM at section 2.3 South Bridge:

• multiple USB ports
• 5 OHCI and 1 EHCI host controllers
• all ports are fully USB 1.1 and USB 2.0 compliant

I have had trouble connecting my case to front port headers. Only one works for me if I plug it into a back port. I have a printer and keyboard plugged in through the back and usually use USB sticks in my front port.

viewtopic.php?t=4715

[sailorMH]

All ten USB ports are USB2.0, and are connected to SB600.
As I know, there is no other USB controller except SB600.
.
Firmware recognizes only one port: USB keyboard MUST be connected to the lower USB port closest to the Audio ports. I have USB hub connected to this first port for flash+kayboard.
8 ports are in back and 2 ports have header on motherboard.


Position of USB header on motherboard is P7.

I am normally using both front (P7) ports, it works normally.

[xeno74]

Hi SailorMH,

You're right because of the USB2 connectors but actually there are only USB 1.1 interfaces (OHCI) with 12 Mbit/s.

There is one real USB 2.0 interface (EHCI) from SB600 with 480 Mbit/s but it seems it is not connected to a USB socket.

You can check it with lsusb.

lsusb -t -v

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/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
    ID 1d6b:0001 Linux Foundation 1.1 root hub
    |__ Port 2: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 12M
        ID 03ee:6901 Mitsumi SmartDisk FDD
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
    ID 1d6b:0001 Linux Foundation 1.1 root hub
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
    ID 1d6b:0001 Linux Foundation 1.1 root hub
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
    ID 1d6b:0001 Linux Foundation 1.1 root hub
    |__ Port 2: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        ID 046a:000c Cherry GmbH 
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/10p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
    ID 1d6b:0001 Linux Foundation 1.1 root hub
    |__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
    |__ Port 1: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
        ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard

Cheers,
Christian

[sailorMH]

You're right because of the USB2 connectors but actually there are only USB 1.1 interfaces (OHCI) with 12 Mbit/s.
There is one real USB 2.0 interface (EHCI) from SB600 with 480 Mbit/s but it seems it is not connected to a USB socket.

Hi xeno74,

You are right - According to AMD SB600 Register Reference Manual there is 5xUSB OHCI internal PCI devices and one (debug port) EHCI device


But also according to SB600 Databook this devices are connected to PHY though root hub, and all physical ports should be EHCI capable.


In real with linux I have USB3.0 PCIe card connected to front panel, but I can measure motherboard port speed at home - probably next week.

Martina

[xeno74]

Hi Martina,

Thanks a lot for the explanation.

I think, I buy a USB3.0 PCIe card as well.

Cheers,
Christian

[Hypex]

Wow, lots of great info, including extra diagrams. Some I had missed in the TRM guide. Well, that trumps the reply I gave!

[Hypex]

I think, I buy a USB3.0 PCIe card as well.

It's strange the EHCI controller is listed as a debug port. I would have expected the slowest to be a debug port. On that note does that mean UHCI is not supported and older USB 1.0 devices will fail?

In any case the EHCI USB controller certainly works. Don't know if there is a limit to connected devices. I've just connected a USB3 cradle with laptop HDD and turned on my printer and both show up.

lsusb -t -v

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/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
    |__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/3p, 12M
        |__ Port 1: Dev 3, If 1, Class=HID, Driver=usbhid, 12M
        |__ Port 1: Dev 3, If 0, Class=HID, Driver=usbhid, 12M
        |__ Port 2: Dev 5, If 0, Class=HID, Driver=usbhid, 1.5M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/10p, 480M
    |__ Port 7: Dev 12, If 0, Class=stor., Driver=usb-storage, 480M

dmesg | grep -i ehci

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ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-pci: EHCI PCI platform driver
ehci-pci 0000:05:13.5: EHCI Host Controller
ehci-pci 0000:05:13.5: new USB bus registered, assigned bus number 1
ehci-pci 0000:05:13.5: applying AMD SB600/SB700 USB freeze workaround
ehci-pci 0000:05:13.5: debug port 1
ehci-pci 0000:05:13.5: irq 12, io mem 0xa0209800
ehci-pci 0000:05:13.5: USB 2.0 started, EHCI 1.00
usb usb1: Product: EHCI Host Controller
usb usb1: Manufacturer: Linux 5.10.232-powerpc64-smp ehci_hcd
usb 1-7: new high-speed USB device number 4 using ehci-pci
usb 1-7: new high-speed USB device number 5 using ehci-pci
usb 1-7: new high-speed USB device number 6 using ehci-pci
usb 1-7: new high-speed USB device number 7 using ehci-pci
usb 1-7: new high-speed USB device number 8 using ehci-pci
usb 1-7: new high-speed USB device number 9 using ehci-pci
usb 1-7: new high-speed USB device number 10 using ehci-pci
usb 1-7: new high-speed USB device number 11 using ehci-pci
usb 1-7: reset high-speed USB device number 11 using ehci-pci
usb 1-7: new high-speed USB device number 12 using ehci-pci
usb 1-5: new high-speed USB device number 13 using ehci-pci

I bench marked my USB3 HDD connected to USB2 port on X1000 and get good speeds!

[xeno74]

Hi Hypex,

Thanks for reporting!

Do you use the official A-EON X1000 case and if yes, where is the USB2 port with the USB 2.0 (EHCI) connection?

Thanks,
Christian

[Hypex]

Hi Hypex,

Thanks for reporting!

Do you use the official A-EON X1000 case and if yes, where is the USB2 port with the USB 2.0 (EHCI) connection?

Thanks,
Christian

No, when I setup my X1000, I ended up installing it into a ThermalTake SpaceCraft VF-1. But all 8 back ports and 2 on board header of the X1000 should be physically connected to EHCI controller. If it's all connected up, then the front top USB ports on top of the Fractal case should be EHCI, including all back ports.

Also, from lacking knowledge I misunderstood about the EHCI debug port. So the EHCI on the X1000 using SB600 isn't some debug port that's used to support EHCI. It supports USB debugging with a USB debug interface which is a modern implementation of serial debugging. So with a modern USB debug cable it acts like a classic null modem cable. So a USB port can be used as a simple serial port for connection to a terminal.